随着goole suggest和gmail等应用的出现，在浏览器和服务器之间完成异步通信的技术被越来越多的开发者和用户所接受。该课题不仅可以让我们感受到Ajax技术带来的对于传统web应用的变革，同时还会了解到J2EE开发的相关技术，-With applications such as gmail goole suggest, and the emergence of the browser and server complete the asynchronous communication between the technology is more and more developers and users to accept. The subject not only allows us to feel the Ajax technology brings change to traditional web applications, while also understanding the development of related technologies J2EE,